Finding the Fourth Proportional to 145,530.14, 200,831.30 and 81,867.99
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Solution
The fourth proportional to 145,530.14, 200,831.30 and 81,867.99 is: 112,977.66
Step by Step Solution
- Step 1: Write the proportion equation
145,530.14 : 200,831.30 = 81,867.99 : x - Step 2: Convert to fraction form
145,530.14/200,831.30 = 81,867.99/x - Step 3: Cross multiply
145,530.14x = 200,831.30 × 81,867.99 - Step 4: Simplify right side
145,530.14x = 16,441,654,860.09 - Step 5: Solve for x
x = 16,441,654,860.09/145,530.14 - Step 6: Final answer
x = 112,977.66
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.